-77.2% is the change from 421 to 96
Calculation steps:
[( 96 - 421 ) ÷ 421] x 100 = -77.2%
Formula
Percentage change = [(96 - 421) / 421] x 100
Subtract the new number by the original number
96 - 421 = -325
-325 ÷ 421 = -0.7719714964370546
-0.7719714964370546 x 100 = -77.2%